Title:
【発明の名称】音程制御装置
Document Type and Number:
Japanese Patent JP3233948
Kind Code:
B2
Abstract:
PURPOSE:To suppress the generation of tremolo sound and the reverberation phenomenon in the musical interval control. CONSTITUTION:If the sampling cycle of the input audio signal data is TO, the value for representing the number of times of the cycle for skip reading or rereading the data from a memory in comparison with the sampling cycle TO is Jn, and the allowable time of the shift in time as the data between a plurality of read-out addresses is Tdmax, the max value Dmax of the address interval of a plurality of read-out addresses in case of the increase of musical interval is set as follows: Dmax=Tdmax/((1-1/Jn).TO), and in case of the reduction of musical interval, Dmax=Tdmax/((1+1/Jn).TO), and the allowable time Tdmax is set to 45-80msec where the reverberation phenomenon does not become conspicuous. The reverberation phenomenon can be suppressed by suppressing the generation of the tremolo sound, setting the size of a ring buffer memory large.
Inventors:
Souichi Toyama
Application Number:
JP6298291A
Publication Date:
December 04, 2001
Filing Date:
March 27, 1991
Export Citation:
Assignee:
Pioneer Corporation
International Classes:
G10H7/00; G06F17/10; G10H7/08; G10L21/003; G10L21/01; G10L21/04; (IPC1-7): G10L21/04
Domestic Patent References:
| JP59201099A | ||||
| JP60176100A | ||||
| JP6151195A | ||||
| JP61121096A | ||||
| JP4289900A | ||||
| JP4295896A |
Attorney, Agent or Firm:
Motohiko Fujimura
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